10101111123 has 8 divisors (see below), whose sum is σ = 13781361088. Its totient is φ = 6577467624.

The previous prime is 10101111109. The next prime is 10101111143. The reversal of 10101111123 is 32111110101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10101111123 - 2⁸ = 10101110867 is a prime.

It is a super-2 number, since 2×10101111123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101111099 and 10101111108.

It is not an unprimeable number, because it can be changed into a prime (10101111143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39151465 + ... + 39151722.

It is an arithmetic number, because the mean of its divisors is an integer number (1722670136).

Almost surely, 2^10101111123 is an apocalyptic number.

10101111123 is a deficient number, since it is larger than the sum of its proper divisors (3680249965).

10101111123 is an equidigital number, since it uses as much as digits as its factorization.

10101111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78303233.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 10101111123 its reverse (32111110101), we get a palindrome (42212221224).

The spelling of 10101111123 in words is "ten billion, one hundred one million, one hundred eleven thousand, one hundred twenty-three".